Dogcows Code - chaz/tint2/blob - src/systray/systraybar.c

   1 /**************************************************************************
   2 * Tint2 : systraybar
   3 *
   4 * Copyright (C) 2009 thierry lorthiois (lorthiois@bbsoft.fr)
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License version 2
   8 * as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write to the Free Software
  16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17 **************************************************************************/
  18
  19 #include <X11/Xlib.h>
  20 #include <X11/Xutil.h>
  21 #include <X11/Xatom.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <glib.h>
  26 #include <Imlib2.h>
  27
  28 #include "systraybar.h"
  29 #include "server.h"
  30 #include "panel.h"
  31
  32 GSList *icons;
  33
  34 /* defined in the systray spec */
  35 #define SYSTEM_TRAY_REQUEST_DOCK    0
  36 #define SYSTEM_TRAY_BEGIN_MESSAGE   1
  37 #define SYSTEM_TRAY_CANCEL_MESSAGE  2
  38
  39 Window net_sel_win;
  40
  41
  42 void init_systray(Systraybar *sysbar, Area *parent)
  43 {
  44    Panel *panel = (Panel *)parent;
  45
  46         sysbar->area.parent = parent;
  47         sysbar->area.panel = panel;
  48
  49    sysbar->area.posy = parent->pix.border.width + parent->paddingy;
  50    sysbar->area.height = parent->height - (2 * sysbar->area.posy);
  51    sysbar->area.width = 100;
  52
  53    sysbar->area.posx = panel->area.width - panel->clock.area.width - panel->area.paddingxlr - panel->area.pix.border.width - panel->area.paddingx - sysbar->area.width;
  54
  55    sysbar->area.redraw = 1;
  56
  57 //printf("init_systray");
  58
  59         net_init();
  60 }
  61
  62
  63 // net_sel_atom == server.atom._NET_SYSTEM_TRAY
  64 // net_opcode_atom == server.atom._NET_SYSTEM_TRAY_OPCODE
  65 // net_manager_atom == server.atom.MANAGER
  66 // net_message_data_atom == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA
  67
  68 int resize_systray (Systraybar *sysbar)
  69 {
  70    return 0;
  71 }
  72
  73
  74
  75 Window win, root;
  76 int width, height;
  77 int border;
  78 int icon_size;
  79
  80
  81 void fix_geometry()
  82 {
  83   GSList *it;
  84
  85   //* find the proper width and height
  86   width = 0;
  87   height = icon_size;
  88   for (it = icons; it != NULL; it = g_slist_next(it)) {
  89     width += icon_size;
  90   }
  91
  92   XResizeWindow(server.dsp, win, width + border * 2, height + border * 2);
  93 }
  94
  95
  96 static void net_create_selection_window()
  97 {
  98   net_sel_win = XCreateSimpleWindow(server.dsp, root, -1, -1, 1, 1, 0, 0, 0);
  99 }
 100
 101
 102 gboolean error;
 103 int window_error_handler(Display *d, XErrorEvent *e)
 104 {
 105   d=d;e=e;
 106   if (e->error_code == BadWindow) {
 107     error = TRUE;
 108   } else {
 109     //g_printerr("X ERROR NOT BAD WINDOW!\n");
 110     abort();
 111   }
 112   return 0;
 113 }
 114
 115
 116 gboolean icon_swallow(TrayWindow *traywin)
 117 {
 118   XErrorHandler old;
 119
 120   error = FALSE;
 121   old = XSetErrorHandler(window_error_handler);
 122   XReparentWindow(server.dsp, traywin->id, win, 0, 0);
 123   XSync(server.dsp, False);
 124   XSetErrorHandler(old);
 125
 126   return !error;
 127 }
 128
 129
 130 // The traywin must have its id and type set.
 131 gboolean icon_add(Window id)
 132 {
 133   TrayWindow *traywin;
 134
 135   traywin = g_new0(TrayWindow, 1);
 136   traywin->id = id;
 137
 138   if (!icon_swallow(traywin)) {
 139     g_free(traywin);
 140     return FALSE;
 141   }
 142
 143   // find the positon for the systray app window
 144         int count = g_slist_length(icons);
 145         traywin->x = border + ((width % icon_size) / 2) +
 146         (count % (width / icon_size)) * icon_size;
 147         traywin->y = border + ((height % icon_size) / 2) +
 148         (count / (height / icon_size)) * icon_size;
 149
 150   // add the new icon to the list
 151   icons = g_slist_append(icons, traywin);
 152
 153   // watch for the icon trying to resize itself!
 154   XSelectInput(server.dsp, traywin->id, StructureNotifyMask);
 155
 156   // position and size the icon window
 157   XMoveResizeWindow(server.dsp, traywin->id, traywin->x, traywin->y, icon_size, icon_size);
 158
 159   // resize our window so that the new window can fit in it
 160   fix_geometry();
 161
 162   // flush before clearing, otherwise the clear isn't effective.
 163   XFlush(server.dsp);
 164   // make sure the new child will get the right stuff in its background
 165   // for ParentRelative.
 166   XClearWindow(server.dsp, win);
 167
 168   // show the window
 169   XMapRaised(server.dsp, traywin->id);
 170
 171   return TRUE;
 172 }
 173
 174
 175 void net_init()
 176 {
 177         // init systray protocol
 178    net_sel_win = XCreateSimpleWindow(server.dsp, server.root_win, -1, -1, 1, 1, 0, 0, 0);
 179
 180         XSetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY, net_sel_win, CurrentTime);
 181         if (XGetSelectionOwner(server.dsp, server.atom._NET_SYSTEM_TRAY) != net_sel_win) {
 182                 fprintf(stderr, "tint error : can't get trayer selection");
 183                 return;
 184         }
 185
 186         XEvent m;
 187         m.type = ClientMessage;
 188         m.xclient.message_type = server.atom.MANAGER;
 189         m.xclient.format = 32;
 190         m.xclient.data.l[0] = CurrentTime;
 191         m.xclient.data.l[1] = server.atom._NET_SYSTEM_TRAY;
 192         m.xclient.data.l[2] = net_sel_win;
 193         m.xclient.data.l[3] = 0;
 194         m.xclient.data.l[4] = 0;
 195         XSendEvent(server.dsp, server.root_win, False, StructureNotifyMask, &m);
 196 }
 197
 198
 199 void net_message(XClientMessageEvent *e)
 200 {
 201   unsigned long opcode;
 202   Window id;
 203
 204   opcode = e->data.l[1];
 205
 206   switch (opcode)
 207   {
 208   case SYSTEM_TRAY_REQUEST_DOCK: /* dock a new icon */
 209     id = e->data.l[2];
 210     if (id && icon_add(id))
 211       XSelectInput(server.dsp, id, StructureNotifyMask);
 212     break;
 213
 214   case SYSTEM_TRAY_BEGIN_MESSAGE:
 215     //g_printerr("Message From Dockapp\n");
 216     id = e->window;
 217     break;
 218
 219   case SYSTEM_TRAY_CANCEL_MESSAGE:
 220     //g_printerr("Message Cancelled\n");
 221     id = e->window;
 222     break;
 223
 224   default:
 225     if (opcode == server.atom._NET_SYSTEM_TRAY_MESSAGE_DATA) {
 226       //g_printerr("Text For Message From Dockapp:\n%s\n", e->data.b);
 227       id = e->window;
 228       break;
 229     }
 230
 231     /* unknown message type. not in the spec. */
 232     //g_printerr("Warning: Received unknown client message to System Tray selection window.\n");
 233     break;
 234   }
 235 }
 236
 237
 238 /*
 239 void event_loop()
 240 {
 241   XEvent e;
 242   Window cover;
 243   GSList *it;
 244
 245   while (!exit_app) {
 246     while (XPending(server.dsp)) {
 247       XNextEvent(display, &e);
 248
 249       switch (e.type)
 250       {
 251       case PropertyNotify:
 252         // systray window list has changed?
 253         if (e.xproperty.atom == kde_systray_prop) {
 254           XSelectInput(display, win, NoEventMask);
 255           kde_update_icons();
 256           XSelectInput(display, win, StructureNotifyMask);
 257
 258           while (XCheckTypedEvent(display, PropertyNotify, &e));
 259         }
 260
 261         break;
 262
 263       case ConfigureNotify:
 264         if (e.xany.window != win) {
 265           // find the icon it pertains to and beat it into submission
 266           GSList *it;
 267
 268           for (it = icons; it != NULL; it = g_slist_next(it)) {
 269             TrayWindow *traywin = it->data;
 270             if (traywin->id == e.xany.window) {
 271               XMoveResizeWindow(display, traywin->id, traywin->x, traywin->y,
 272                                 icon_size, icon_size);
 273               break;
 274             }
 275           }
 276           break;
 277         }
 278
 279         // briefly cover the entire containing window, which causes it and
 280         // all of the icons to refresh their windows. finally, they update
 281         // themselves when the background of the main window's parent changes.
 282
 283         cover = XCreateSimpleWindow(display, win, 0, 0,
 284                                     border * 2 + width, border * 2 + height,
 285                                     0, 0, 0);
 286         XMapWindow(display, cover);
 287         XDestroyWindow(display, cover);
 288
 289         break;
 290
 291       case ReparentNotify:
 292         if (e.xany.window == win) // reparented to us
 293           break;
 294       case UnmapNotify:
 295       case DestroyNotify:
 296         for (it = icons; it; it = g_slist_next(it)) {
 297           if (((TrayWindow*)it->data)->id == e.xany.window) {
 298             icon_remove(it);
 299             break;
 300           }
 301         }
 302         break;
 303
 304       case ClientMessage:
 305         if (e.xclient.message_type == net_opcode_atom &&
 306             e.xclient.format == 32 &&
 307             e.xclient.window == net_sel_win)
 308           net_message(&e.xclient);
 309
 310       default:
 311         break;
 312       }
 313     }
 314     usleep(500000);
 315   }
 316
 317   // remove/unparent all the icons
 318   while (icons) {
 319     // do the remove here explicitly, cuz the event handler isn't going to
 320     // happen anymore.
 321     icon_remove(icons);
 322   }
 323 }
 324 */
 325